Chemical Imaging of the Spatial Distribution and Interactions of Tannin Dispersal in Bioplastic Systems

Abstract:

IR chemical imaging has been used to characterise the dispersion of condensed tannin additives in a biodegradable plastic, poly(butylene succinate). By mapping key FTIR absorptions, acetylated tannin was found to remain in discrete aggregates, though the outer of these particles contained a mixed phase with PBS. In particles >100 μm, PBS does not appear to ingress the tannin core, only wetting the outer region. Analysis of a second tannin derivative indicated that there was a more uniform dispersion of the additive in the PBS matrix.

• Periodical: Advanced Materials Research (Volumes 29-30)
• Pages: 173-176
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.29-30.173
• Online since: November 2007
• Authors: Marc Gaugler, Warren Grigsby, D. Harper, T. Rials
• Keywords: Biodegradable Plastic, Condensed Tannin, Infrared Imaging, Polyphenolics

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